ADCP-75-130 • Issue 3C • August 2006 Table 6. Maximum Forward Path RF Output Signal Levels at the Digital Remote Unit MODULATION GSM 800 EDGE 800 AMPS 800 TDMA 800 CDMA 800 NUMBER OF CARRIERS Composite Per Carrier (dBm) Composite (dBm) Per Carrier (dBm) Composite (dBm) Per Carrier (dBm) Composite (dBm) Per Carrier (dBm) Composite (dBm) (dBm) Per Carrier (dBm) 1 25.5 25.5 24.5 24.5 25 25 22 22 15 15 2 23.5 19.5 21 18 22 19 20 17 14 11 3 21 16 19 13.5 20.
ADCP-75-130 • Issue 3C • August 2006 3 INSTALLATION PLANNING AND SYSTEM DESIGN This section provides installation planning information and basic system design recommendations for RF engineers that will be designing and installing an in-building coverage solution using the Digivance ICS. System design and planning services are available from ADC if required. Refer to Section 7 of this manual for additional information. 3.
ADCP-75-130 • Issue 3C • August 2006 The HPCP is rack or wall mountable. Refer to the Digivance ICS 800 and 1900 MHz High Power Conditioning Panel User Manual (ADCP-75-175) for additional information. 3.1.2 Remote BTS (Cell Site Base Station) Interface A remote interface between the DHU and the BTS (cell site base station) via a donor antenna requires specific RF input and output signal levels at both the DHU and the antenna.
ADCP-75-130 • Issue 3C • August 2006 3.2 Location and Mounting Requirements 3.2.1 DHU and DEU Location and Mounting Requirements The DHU and the DEU may be either rack mounted or wall mounted. Fasteners (both metric and US standard) are included with each unit for rack mount applications. A pair of reversible mounting brackets is provided that allows the unit to be mounted in either a 19-inch or 23-inch EIA or WECO equipment rack.
ADCP-75-130 • Issue 3C • August 2006 The DC power cable and optical fibers should be routed to the DRU front panel for connection. The antenna coaxial cable should be routed to the DRU rear panel for connection. A minimum of 3 inches (76 mm) of clearance space should be provided on all sides of the DRU (except the bottom) to ensure there is adequate air circulation for cooling. In addition, at least one surface of the DRU installation area must be open to the interior of the building.
ADCP-75-130 • Issue 3C • August 2006 15988-A Figure 10. AC/DC Power Converter 3.4 Optical Options and Requirements Each DHU and its associated DEU’s and DRU’s are connected over a pair of optical fibers. One fiber transports the forward path optical signal and the other fiber transports the reverse path optical signal. Either 62.5 or 50 micron core multi-mode optical fiber; or 9 micron core single-mode optical fiber may be used for the optical transport connection. With 62.
ADCP-75-130 • Issue 3C • August 2006 62.
ADCP-75-130 • Issue 4A • December 2006 3.6 System Expansion Planning The DEU enables 6-way expansion of any optical port. This makes it possible to add more DRU’s without having to install additional DHU’s. Each DHU is equipped with six optical ports. If more than six DRU’s are required by the application, a DEU may be connected to one of the optical ports at the DHU which expands that port to six ports.
ADCP-75-130 • Issue 3C • August 2006 ALL ANTENNAS ARE EQUIPPED WITH A 72-INCH RG58/U CABLE TERMINATED WITH A MALE SMA CONNECTOR MOUNTING STUD LENGTH - 1.5 INCHES (38 mm) DIAMETER - 0.875 INCHES (22 MM) MOUNTING STUD LENGTH - 1.5 INCHES (38 mm) DIAMETER - 0.875 INCHES (22 MM) 2.26 INCHES (57 MM) 7.26 INCHES (184 MM) DIAMETER - 6.14 INCH (156 MM) DEPTH - 1.05 INCH (27 MM) 3.88 INCHES (99 MM) 2.5 dBi GAIN CEILING-MOUNT OMNIDIRECTIONAL 2.38 INCHES (60 MM) 7.
ADCP-75-130 • Issue 3C • August 2006 isolate the problem. Once the source of the fault is isolated, the appropriate action can be taken to correct the problem. The only unit components that can be replaced are the cooling fans which are mounted in the DHU and the DEU and the modular optical transceivers. The failure of any other component within a unit will require replacement of the unit. Basic trouble-shooting procedures are provided in Section 6 of this manual. 3.
ADCP-75-130 • Issue 3C • August 2006 3.10.2 Phase Two – System Design Determine forward and reverse path loss and then design for unity gain on the uplink and maximum power out of the DRU on the downlink: The overall purpose of the Digivance ICS is to transparently overcome attenuation losses, not to provide additional gain beyond what is required to bring the signal to unity gain. Complete the following steps to make this determination: 1.
ADCP-75-130 • Issue 3C • August 2006 3. Conduct an initial performance evaluation and complete the following: a) b) c) Confirm proper isolation, signal quality, and power levels. Make test calls from DRU service area and evaluate call quality (confirm with service provider if desired). Address performance issues as needed. 4. Install the remaining DRU’s and also any DEU’s as described in the Digital Expansion Unit Installation Instructions (ADCP-75-111). Test call quality and range of each DRU as needed.
ADCP-75-130 • Issue 3C • August 2006 4 DIGITAL HOST UNIT INSTALLATION PROCEDURE This section provides the installation procedures for the DHU. Installation of the DEU(s) and DRU(s) may proceed separately from the installation of the DHU. The installation procedures for the DEU are provided in the Digital Expansion Unit Installation Instructions (ADCP -75111) which are shipped with the DEU.
ADCP-75-130 • Issue 3C • August 2006 The following materials are required in order to complete the procedures in this section: • Wall-mount fasteners (wall-mount applications only) • #22 AWG (0.40 mm) category 3 or 5 cable (for power cable and external alarm connections) • RJ-45 male connectors (for power cable) • #18 AWG (1.00 mm) insulated stranded copper wire (for chassis grounding wire) • Ring terminal for #18 wire (for chassis ground wire connection) • 50 or 62.
ADCP-75-130 • Issue 3C • August 2006 Warning: Wet conditions increase the potential for receiving an electrical shock when installing or using electrically-powered equipment. To prevent electrical shock, never install or use electrical equipment in a wet location or during a lightning storm. Use the following procedure to install the DHU in the equipment rack: 1. The DHU is shipped with the mounting brackets installed for 19-inch rack installations. If mounting the DHU in a 19-inch rack, proceed to step 4.
ADCP-75-130 • Issue 3C • August 2006 5. Secure the mounting brackets to the rack using the four machine screws provided (use #12-24 screws or M6 x 10 screws, whichever is appropriate). Note: Provide a minimum of 3 inches (76 mm) of clearance space on both the left and right sides of the DHU for air intake and exhaust. 4.4.2 Wall-Mount Installation The DHU may be mounted from any flat vertical surface.
ADCP-75-130 • Issue 3C • August 2006 3. Using the DHU as a template, mark the location of the mounting holes on the mounting surface. Note: The mounting holes in the DHU cable management tray are spaced 11-21/32 inches (296 mm) center to center. 4. Set the DHU aside and then drill appropriately sized holes in the mounting surface for the fasteners. 5. Partially install the fasteners in the drilled holes. Leave the head of each fastener protruding about 1/4 inch (6 mm) from the mounting surface. 6.
ADCP-75-130 • Issue 3C • August 2006 4.6 Coaxial Cable Connections The RF interface between DHU and the BTS is supported through a pair of type N female connectors mounted on the DHU front panel. One connector provides the coaxial cable connection for the forward path (downlink) signal. The other connector provides the coaxial cable connection for the reverse path (uplink) signal. Coaxial cables link the DHU to the BTS through an interface device such as the HPCP or the RIU.
ADCP-75-130 • Issue 3C • August 2006 4.7 Modular Optical Transceiver Installation The modular optical transceivers are available separately and may or may not be installed in the DHU depending on the configuration ordered. If the optical transceivers are factory installed in the DHU, skip this section and proceed to Section 4.8. If the optical transceivers are not factory installed, use the following procedure to install each transceiver: 1.
ADCP-75-130 • Issue 3C • August 2006 Note: Two types of optical transceivers, type A and type B, are available. Both types provide the same functionality. On the type A optical transceiver, the release lever (see Figure 18) must be closed for installation. 5. Insert the optical transceiver into the socket until it locks into place. 6. Replace the optical transceiver dust cap if it was removed for installation. 7. Repeat procedure for each optical transceiver that requires installation. 4.
ADCP-75-130 • Issue 3C • August 2006 OPTICAL CONNECTOR ASSEMBLY DETAIL FORWARD PATH (TX) CONNECTOR REVERSE PATH (RX) CONNECTOR PORT 1 OPTICAL TRANSCEIVER CABLE GUIDE DETAIL OPTICAL CONNECTOR DESIGNATION CARD AND CLEAR HOLDER DETAIL PLASTIC COVER CARD HOLDER CABLE GUIDES 17274-A Figure 19. Ports 1–6 Fiber Optic Cable Connections TRANSCEIVER COLOR CODE BLUE = SINGLE-MODE (9 MICRON) BLACK/ BEIGE = MULTI-MODE (50 OR 62.
ADCP-75-130 • Issue 3C • August 2006 7. Remove the dust caps from the optical fiber connectors and the port 1 optical transceiver. Note: Leave the dust cap in place on any unused optical transceiver. 8. Clean each connector (follow connector supplier’s recommendations) and then insert the optical fiber connector pair into DHU optical port 1 (see Figure 19). 9.
ADCP-75-130 • Issue 3C • August 2006 5. Connect the DC power cable to the DHU port 1 DC PWR jack as shown in Figure 21. 6. Place the DC power cable within the cable guides provided (see Figure 21) and then dress and secure the cable at the DHU per standard industry practice. RJ-45 CONNECTOR DETAIL 1 8 RJ-45 CONNECTOR PORT 1 DC POWER CONNECTOR 17275-A CABLE GUIDE DETAIL CABLE GUIDES Figure 21. 48 VDC Power Cable Connection 7.
ADCP-75-130 • Issue 3C • August 2006 3. Strip back the outer cable sheath and insulation to expose the wires at both ends of the cable and strip back 0.2 inches (5 mm) of insulation each wire. 4. Connect the Major alarm wire pair to the MAJOR COM/NC or MAJOR COM/NO terminals (whichever is required by the external alarm system) on the DHU alarm terminal connector (supplied with DHU) as shown in Figure 22.
ADCP-75-130 • Issue 3C • August 2006 1. Locate the 120 VAC power cord which is provided separately with the DHU. Use only the AC power cord provided with the DHU or an equivalent UL/CUL listed 3-conductor, 18 AWG cord terminated in a molded-on plug cap rated 125 V, 15 A with a maximum length of 6 feet (1.8 m). Note: The DHU is intended to be used with a 3-wire grounding type plug which has a grounding pin. Equipment grounding is required to ensure safe operation. Do not defeat the grounding means.
